The HDC project is currently being proposed as an approximately 63‐mile long, east–west multipurpose transportation corridor that could accommodate a highway, an energy production and/or transmission facilities and a high speed rail feeder service line, between State Route 14 in Los Angeles County and State Route 18 in San Bernardino County. The project aims to improve mobility and access for people and goods in the rapidly growing Antelope, Victor, and Apple Valley areas of Los Angeles and San Bernardino counties.